Henry uhmann



(No- Model.) 7 H. LUHMANN.

REFRIGERATING APPARATUS FOR GOOLIING STORAGE BINS, BARRELS, &c. No.309,233. Patented Dec. 16, 1884.

Warren drains PATENT @hhlfifis HENRY LUHMANN, OF NEXV YORK, N. Y.

REFRlGERATlNG APPARATUS FOR COOLING STORAGE-BlNS, BARRELS, dc.-

SPBCIPICATION forming part of Letters Patent IEO 309,233, dated December16, 1884.

Application lilcd A ugust 4, 1894.

To all whom it may concern.-

Be it known that I, HENRY LUHMANN, of the city, county, and State of NewYork, have invented a new and useful ln'iprovemeut in RefrigeratingApparatus for Cooling Storage- Bins, Barrels, 850.; and I do herebydeclare that the following is a full and exact description thereof,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, making a part of this specification.

My invention relates to apparatus for cooling the contents of barrelsand other receptacles for vegetables, fruits, &c. a

. It has for its object a convenient portable device, which may bereadily inserted into an open barrel or similar receptacle for freshvegetables and fruits, and which shall, without bringing them intocontact with the ice, so cool the temperature within the barrel as tokeep them fresh and prevent their wilting.

It consists of a portable metallic vessel adapted to be opened at thetop, and within which is fitted afloat consisting of an air-tight case,upon which the ice is placed, and whose buoyancy is such that as the icemelts and fills the bottom of the inclosing-vessel with water the floatborne upward thereon shall keep the ice above the water and in the upperportion of the vessel. where its refrigerative action will be mosteffective.

In the accompanying drawings, Figure l is a view in perspective of myrefrigcratingyessel, the dotted lines indicating a barrel whose contentsare to be kept cool, and Fig. 2 is a vertical section of the vessel, thelloat being shown in elevation.

The apparatus is constructed of a comparatively high and narrow metalliccase, A, which may be of any desired form in cross-section, and which isfitted at its upper end with a door, 13, closing the same. This door Bmay be fitted at one side of the vessel to open and close by sliding, asillustrated in the drawings,

(No model.)

or may be hinged or otherwise inade'to close over the top, as a lid orcover.

lVithin the outer vessel, A, an air-tight case or float, O, is looselyfitted, so as to play freely up and down therein, with its upper surfaceat about a right angle with the sides of the vessel. The dimensions ofthis air-tight case G are such that it will have sufficient buoyancy tofloat and uphold the amount of ice which may be stored above it withinthe vessel A, and the dimensions of this outer vessel are adapted topermit it to be inserted within a barrel, B, (see dotted lines. Fig. 1,)or other form of receptacle used for the storage of articles requiringto be kept cool and fresh, and yet leave ample space for said articlesaround and above it.

The vessel A may be fitted with bails or airs l), for convenience ofhandling.

In the use of the apparatus the space in the vessel A above the float Gis filled with ice and the vessel closed and placed within the barrel Eor other receptacles containing fruits, vcgetal'iles, or other articlesto be kept fresh and cool. As the ice melts, the water therefromdripping to the bottom of the VS sel will cause the float O to rise, andtheice will thus be automatically kept, until all melted, in constantcontact with the top of the vessel A. where it will do most good.

I claim as my invention- The refrigerating apparatus consisting of awater-tight metallic vessel adapted to be opened at the top, incombination with an air-tight case fitted therein to serve as a float,substantially in the manner and for the purpose herein set forth.

In testimony whereofl have signed my name to this specification in thepresence oftwo subscribing witnesses.

HENRY LUHMANN.

Witnesses:

A. B. Moonii, l). A. B'UR'R.

